Good morning wilsoa3!
Welcome to the CP forum!
Sorry to hear of the frozen shoulder, and I know that the surgery on it can be very painful as well.
I have a friend here at work that had shoulder surgery, and his froze up too! I will never forget how he tried to free it. We have a 5 ton crane in our shop, so he being a redneck tuffy type wraped a chain around his hand and continued to raise the hoist up until he was hanging in the air! He was screaming the whole time!
Well since that didn't work, he had the surgery you mentioned to free it up, and I can tell you that it took over a year after that with lots of PT to get it to where it is today. He will never have full range of motion again, but he is a lot better now.
I was thinking a newer member posted about having a frozen shoulder and said something about leaving that way for two years or so and then maybe it should free up by then. I have never heard of such a thing!
All I can suggest, is that you get into PT and stay there until you have a good handle on it, and then stick with it for how ever long it takes. It may very well take more than a year to get the range you can get, but after a while it's more than likley going to be what it is.
There should be other members along who have some knowledge on this.
Again Welcome! I'm sure you will enjoy the members here. I do!